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Proceedings Article

High power red laser oscillation in Pr3+-doped waterproof fluoroaluminate glass fiber excited by a GaN laser diode

[+] Author Affiliations
J. Nakanishi, T. Yamada

NIDEK Co., Ltd. (Japan)

Y. Fujimoto

Osaka Univ. (Japan)

O. Ishii, M. Yamazaki

Sumita Optical Glass, Inc. (Japan)

Proc. SPIE 7912, Solid State Lasers XX: Technology and Devices, 791226 (March 03, 2011); doi:10.1117/12.874437
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From Conference Volume 7912

  • Solid State Lasers XX: Technology and Devices
  • W. Andrew Clarkson; Norman Hodgson; Ramesh Shori
  • San Francisco, California, USA | January 22, 2011

abstract

We have demonstrated a high power red fiber laser with a Pr-doped waterproof fluoro-aluminate glass fiber (Pr:WPFGF). When 800 mW pumping power of a blue/violet GaN laser diode (GaN-LD) was launched into the Pr:WPFGF (core diameter 8 μm, length 40 mm) with dielectric coating on both end surfaces to construct a resonator, the maximum output laser power at 638 nm was obtained to be 311.4 mW that is higher than previously reported Pr:ZBLAN fibers. The threshold power was evaluated to be 52.1 mW, and the slope efficiency was calculated to be 41.6%. Assuming the resonator to be a Fabry-Perot resonator, we can calculate the output power to be 336 mW at 800 mW pump power and the slop efficiency to be 44.2%. These theoretical values show good agreement with experimental ones.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

J. Nakanishi ; T. Yamada ; Y. Fujimoto ; O. Ishii and M. Yamazaki
"High power red laser oscillation in Pr3+-doped waterproof fluoroaluminate glass fiber excited by a GaN laser diode", Proc. SPIE 7912, Solid State Lasers XX: Technology and Devices, 791226 (March 03, 2011); doi:10.1117/12.874437; http://dx.doi.org/10.1117/12.874437


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